APA-viite (7. p.)
Perkins, D. (2012). Calculus and its origins. Mathematical Association of America.
Chicago-viite (17. p.)
Perkins, David. Calculus and Its Origins. [Washington, D.C.?]: Mathematical Association of America, 2012.
MLA-viite (9. p.)
Perkins, David. Calculus and Its Origins. Mathematical Association of America, 2012.
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